EP0056880B1 - Verfahren zur Herstellung eines brikettierten Einsatzmaterials für Zink-Schachtöfen - Google Patents

Verfahren zur Herstellung eines brikettierten Einsatzmaterials für Zink-Schachtöfen Download PDF

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Publication number
EP0056880B1
EP0056880B1 EP81201243A EP81201243A EP0056880B1 EP 0056880 B1 EP0056880 B1 EP 0056880B1 EP 81201243 A EP81201243 A EP 81201243A EP 81201243 A EP81201243 A EP 81201243A EP 0056880 B1 EP0056880 B1 EP 0056880B1
Authority
EP
European Patent Office
Prior art keywords
lead
content
zinc
calcine
shaft furnaces
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81201243A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0056880A1 (de
Inventor
Dirk Dr. Dipl.-Chem. Hankel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Group AG
Original Assignee
Metallgesellschaft AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metallgesellschaft AG filed Critical Metallgesellschaft AG
Publication of EP0056880A1 publication Critical patent/EP0056880A1/de
Application granted granted Critical
Publication of EP0056880B1 publication Critical patent/EP0056880B1/de
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/02—Preliminary treatment of ores; Preliminary refining of zinc oxide
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating

Definitions

  • the invention relates to a method for producing a briquetted feed material for zinc shaft furnaces, wherein roasted material containing zinc oxide from a fluidized bed roasting is subjected to hot briquetting.
  • the sulfidic ore concentrates must first be roasted and made into pieces.
  • the sintering roasting on a traveling grate is relatively complex, leads to an exhaust gas with a relatively low S0 2 content and causes problems with regard to pollution of the environment.
  • the roasting in the fluidized bed largely avoids these problems, but the roasted fine-grained material has to be made into pieces in a separate process step.
  • the object of the invention is to produce briquettes from the roasted material of fluidized bed roasts with as little effort as possible, which have good properties for processing in a zinc shaft furnace.
  • This object is achieved according to the invention in that a metallic lead content and / or lead oxide content of at least 3%, calculated as lead, is set in the roasted material, non-baking coal with a low content of volatile constituents is mixed into the roasted material, the ratio of Pb to C. in% by weight is set to at least 1, and the mixture is briquetted at a press temperature of 250 to 470 ° C under a press pressure of 4 to 20 t / cm roll width, measured dynamically.
  • the roasted material is obtained as bed discharge, cyclone discharge and possibly discharge from other dedusting plants in a wide grain range of approximately 0 to 5 mm.
  • the vast majority is in a grain size of less than 2 mm. It is very important that the individual discharges are mixed together very well.
  • the admixed metallic lead and / or oxidic lead generally comes from the operation of the zinc shaft furnace itself, e.g. Trass from the pump sump of the condenser, dust from the room dust and filter sludge from the gas wash.
  • the substances containing the metallic lead and / or oxidic lead are also used in a grain size of about 0 to 5 mm.
  • the addition of metallic lead and / or lead oxide can be up to about 15% by weight, calculated as lead.
  • the non-baking coals can contain up to about 6% volatiles such as coke breeze and anthracite. Temperatures in the upper range of the pressing temperature result in higher strength of the briquettes. This also applies to higher pressures. The pressures are measured dynamically, i.e. during the operation of the press.
  • a preferred embodiment is that the lead content is 3 to 12%, the carbon content is 2 to 6% and the ratio of Pb to C is set to 1.5 to 2. These areas result in briquettes with particularly good properties.
  • the advantages of the invention are that the pellets have a good initial reducibility and thus a good overall reducibility in a relatively short time, have good and sufficient mechanical strength, can be produced without great effort, and the briquetting takes place without subsequent heating of the discharge material of the fluidized bed can.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP81201243A 1981-01-22 1981-11-02 Verfahren zur Herstellung eines brikettierten Einsatzmaterials für Zink-Schachtöfen Expired EP0056880B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813101886 DE3101886A1 (de) 1981-01-22 1981-01-22 Verfahren zur herstellung eines brikettierten einsatzmaterials fuer zink-schachtoefen
DE3101886 1981-01-22

Publications (2)

Publication Number Publication Date
EP0056880A1 EP0056880A1 (de) 1982-08-04
EP0056880B1 true EP0056880B1 (de) 1984-06-20

Family

ID=6123064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81201243A Expired EP0056880B1 (de) 1981-01-22 1981-11-02 Verfahren zur Herstellung eines brikettierten Einsatzmaterials für Zink-Schachtöfen

Country Status (6)

Country Link
US (1) US4525207A (ro)
EP (1) EP0056880B1 (ro)
JP (1) JPS57143446A (ro)
DE (2) DE3101886A1 (ro)
PL (1) PL234779A1 (ro)
RO (1) RO84192B (ro)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3529084C1 (de) * 1985-08-14 1986-10-16 Thyssen Stahl AG, 4100 Duisburg Verfahren und Anlage zur Herstellung bindemittelloser Heissbriketts
CA2087557C (en) * 1992-07-31 2000-04-25 Matthew Raskin Method for removing catalyst
JP2580799Y2 (ja) * 1993-05-25 1998-09-17 三相電機株式会社 電動機およびその固定子
JP2653018B2 (ja) * 1993-11-24 1997-09-10 日本電気株式会社 トランスインピーダンス形増幅回路

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1041256B (de) * 1953-05-13 1958-10-16 Nat Smelting Co Ltd Verfahren zur Gewinnung von Blei und Zink
BE653612A (ro) * 1963-09-30
ES340602A1 (es) * 1966-05-17 1968-06-01 Boliden Ab Procedimiento para la aglomeracion de un producto de grano fino.
GB1149760A (en) * 1966-07-05 1969-04-23 Imp Smelting Corp Ltd Improvements in or relating to blast furnace operation
IL34874A0 (en) * 1969-07-14 1970-09-17 Metallurgical Processes Ltd The preparation of feed material for a blast furnace
IE38603B1 (en) * 1972-12-11 1978-04-26 Metallurgical Processes Ltd Preparation of feed material for a blast furnace
DE2335669A1 (de) * 1973-07-13 1975-02-06 Metallgesellschaft Ag Verfahren zur herstellung von erzkoks-heissbriketts fuer die selbstgaengige verhuettung
ZA793158B (en) * 1978-07-04 1980-07-30 Isc Smelting Roasting of sulphide materials

Also Published As

Publication number Publication date
US4525207A (en) 1985-06-25
RO84192A (ro) 1984-05-23
DE3164341D1 (en) 1984-07-26
DE3101886A1 (de) 1982-08-26
PL234779A1 (ro) 1982-08-16
RO84192B (ro) 1984-07-30
JPS57143446A (en) 1982-09-04
EP0056880A1 (de) 1982-08-04

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